--- /dev/null
+// -*- C++ -*-
+
+// Copyright (C) 2006, 2009 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+#include <ext/type_traits.h>
+#include <tr1/type_traits>
+#include <testsuite_hooks.h>
+
+template<typename T>
+ void
+ check_remove_unsigned()
+ {
+ bool test __attribute__((unused)) = true;
+ typedef typename __gnu_cxx::__remove_unsigned<T>::__type signed_type;
+ VERIFY( std::tr1::is_signed<signed_type>::value );
+ }
+
+int main()
+{
+ check_remove_unsigned<char>();
+ check_remove_unsigned<unsigned char>();
+ check_remove_unsigned<signed char>();
+ check_remove_unsigned<int>();
+ check_remove_unsigned<unsigned int>();
+ check_remove_unsigned<signed int>();
+ check_remove_unsigned<long>();
+ check_remove_unsigned<unsigned long>();
+ check_remove_unsigned<signed long>();
+ check_remove_unsigned<long long>();
+ check_remove_unsigned<unsigned long long>();
+ check_remove_unsigned<signed long long>();
+ return 0;
+}